I have good reason to believe that Manganese (this much ignored super important mineral) deficiency is the number one reason for low stomach acid and gallbladder disease. For proper production of bile your body will need a sufficient balanced mineral supply. Mess up that balance and you end up with digestive issues. Magnesium, selenium and Zinc are some minerals most people supplement on however supplementing individual minerals without keeping track of other minerals can be harmful. Because minerals deplete one another.
One other important reason your balance may get out of whack is GLYPHOSATE consumption. Glyphosate just so happens to primarily chelate manganese. Not only is manganese required for bile and acid production it also is required for your lactobacillus good bacteria in your gut. Without Manganese your Zinc and other levels will rise when attempting to release bile.
And lastly our favorite Vitamin C needs Manganese to activate. Take high dose Vitamin C without supplemental Manganese and you deplete your Manganese stores. Not to mention Vitamin C also depletes copper.
Now it doesn't mean all gallbladder issue are due to manganese deficiency, but I certainly believe that in most cases it is due to a mineral imbalance. So check your levels.